|
berm crest : 5 phrases in 4 subjects |
| Mining | 1 |
| Natural resourses and wildlife conservation | 1 |
| Oceanography & oceanology | 1 |
| Sakhalin | 2 |
|
berm crest : 5 phrases in 4 subjects |
| Mining | 1 |
| Natural resourses and wildlife conservation | 1 |
| Oceanography & oceanology | 1 |
| Sakhalin | 2 |